Optical network termination apparatus with shared components and passive optical network system comprising same
    1.
    发明授权
    Optical network termination apparatus with shared components and passive optical network system comprising same 有权
    具有共享组件的光网络终端设备和包括它的无源光网络系统

    公开(公告)号:US07613395B2

    公开(公告)日:2009-11-03

    申请号:US10990157

    申请日:2004-11-16

    IPC分类号: H04J14/00

    摘要: A transmission system for a passive optical network comprises a shared optical transmission apparatus, a shared electrical interface apparatus and a plurality of transmission convergence termination units. The shared optical transmission apparatus is configured for being coupled to an optical line termination unit via an optical fiber. The shared electrical interface apparatus is coupled to the shared optical transmission apparatus. The plurality of transmission convergence termination units is coupled to the shared electrical interface apparatus. Each one of the transmission convergence termination units is configured for selectively controlling the shared electrical interface apparatus.

    摘要翻译: 无源光网络的传输系统包括共享光传输设备,共享电接口设备和多个传输会聚终端单元。 共享光传输装置被配置为经由光纤耦合到光线路终端单元。 共享电接口装置耦合到共享光传输装置。 多个发送汇聚终端单元耦合到共享电接口装置。 传输会聚终端单元中的每一个被配置为选择性地控制共享电接口设备。

    Software error detection apparatus
    4.
    发明授权
    Software error detection apparatus 失效
    软件错误检测装置

    公开(公告)号:US4926427A

    公开(公告)日:1990-05-15

    申请号:US333752

    申请日:1989-04-03

    申请人: Duane Remein

    发明人: Duane Remein

    IPC分类号: G06F11/00 G06F11/36

    摘要: A software error detection circuit is described which supplements the known concept of a simple watch dog timer. The same clock pulse used to clock and time out a watch dog timer implements the addressing of a program memory. A comparison is then made of output data with data on a data bus. A failed comparison then raises an alarm faster and more efficiently than a timer circuit alone. Furthermore, in a parallel data bus environment a predetermined data check of adjacent bus line data is recommended over an all data or a random data check.

    摘要翻译: 描述了补充简单看门狗定时器的已知概念的软件错误检测电路。 用于计时和超时看门狗定时器的相同时钟脉冲执行程序存储器的寻址。 然后,使用数据总线上的数据对输出数据进行比较。 失败的比较然后比单独的定时器电路发出更快,更有效的报警。 此外,在并行数据总线环境中,对所有数据或随机数据检查推荐相邻总线数据的预定数据检查。